Liquid level indicator



March 29, 1938. D 'D S, 2,112,635

LIQUID LEVEL INDI CATOR Filed; Oct. 8, 1957 A TTORNE Y.

Patented Mar. 29, 1938 UNITED STATE-S 35? .1 a g LIQUID. LEVEL INDICATOR Dominick Rodgers, Pittsburgh, Pa. 7 Application October 8, 1937, Serial No. 168,092:

a .Clailns (o1. re gns Thisinventionrelates to level indicators and horizontal position. Ii -desired, the peripheral among its objects is to provide an instrument for surface o'f' the body core l may be markedj'n indicating the angularity of an object upon which stead. the indicator is supported, with respect to a hori- The two ends of the body core [0 and the ends zontal axis or plane. of the cylindrical transparent cove-r l6 are cov- This invention is adaptable to all forms of ered by two end caps I8, and each cap is provided moving objects, such as machinery and mechwith an end base l9 and a cylindrical side wall anism, and also to vehicles, such as automobiles 20. The end wall or base I9 engages the end suror airplanes, in which the indicator may be face of the body core in, and the cylindrical side 10 mounted upon the instrument board to indicate wall 20 of the cap covers the corresponding porlo the angle of ascent or descent either in the air, tion of the body core I 0. Where the body ID or upon a hill, in the case .of an automobile. or cylinder I 6 is marked with graduations, the

A preferred form of the level indicator emouter cap surface 20 is plain and unmarked. bodying the principles of my invention is illus- Where desired, however, the body and the cylintrated in the accompanyi drawing, in which der may be left unmarked and the side wall sur- 1.:

Figure 1 is a front elevational view with parts face 26 of the cap marked as indicated in Figbroken away, of the level indicator in its supportwe 5.

ing frame; The two end caps l8 are held in position at Figure 2 s an end elevational View Of the the ends of the indicator by means of the bolt grooved y for the indicating q l4 which extends through the body core l0 and Figure 3 s a Side elevational View Of the through openings in the two end caps. The caps grooved y in Figure and the body elements are lockedin position on Fi 4 i a side l v i n vi w f h the bolt M by means of lock nuts 23 and 24. gIOOVed body in Figure In order that the indicator may be readily and Figure 5 s a side elevational w of the n easily filled with the indicating liquid, after it n Figure has been assembled, the transparent covering Figures 6 and '7 are side and front elevational cylinder [6 is provided ith small opening 25 vi ws, r p c iv y, f the supporting frame for through which the fluid may be introduced into the indicator; and the groove ll. After a sufficient amount has i a SIde VleW 0f the frame mounted been introduced to cause the upper level of the On an mellned deshboardfluid to reach the predetermined zero line mark As illustrated in Figure 1, the level indicator on the indicating cap, the opening 25 is dosed comprises a cylindrical body member ID having a by a Suitable rubber m 25 circumferentialgroove I I centrallylocated between In order t t t indicator may be easily the ends f t e Cy al b y 0 e to mounted upon dashboards of various angles or t a Volume of liquid to move f eely around upon other supporting brackets, the frame I5 is the core in as it is turned around its axis in reprovided with two side lugs 21 and 28 for supsponse to the movement of a pport or body, porting the ends of the bolt 14 as trunnions to such as a machine or mechanism or vehicle, uppermit the indicator to be adjusted to the proper 0 on which the indicator is mounted. position at which the top level of the liquid Will The body core I0 is also provided with a hole l3 be at the zero line When the device or bracket extending axially throughout its length, to acupon which the indicator is mounted is in a posicommodate a locking bolt I4 for locking the eletion corresponding to a horizontal or level posiments of the indicator together and for supporttion of its support. The side lugs may be made ing the indicator upon a frame 15. slightly resilient to permit the supporting bolt l4 In order to keep the fluid l2 in position in the to be easily inserted between them. After the ingroove I I, the body core I0 is covered by a closedicator has been properly located in the side lugs ly fitting transparent tube or cylinder l6 which or brackets 21 and 28, it may be secured in posiclosely engages the side surfaces I! on the cylintion by means of additional lock nuts on the bolt 59 drical body core ID to prevent the fluid from l4. The frame is also provided with two addimoving between the body l0 and the cylindrical tional lugs 29 and 30 to enable the frame to be cover IS. The transparent cylindrical cover l6 secured in position on the supporting bracket or is marked on the upper and lower front quaddashboard upon which it is to be mounted. rants to indicate the angular distances at the My invention is not limited to the specific demarked points, from a predetermined zero or tails of construction that are illustrated, but may 55 be modified without departing from the spirit and scope of the invention as set forth in the appended claims.

I claim as my invention:

1. A level indicator comprising a cylindrical body element having a groove extending around its circular periphery for receiving a body of liquid, a transparent cylindrical cover closely fitting the element and confining the liquid to the groove, a side cover fitting closely over each end of the body and the cylindrical cover, each side cover carrying angle-indicating indicia to indicate the angular movement of the liquid from a predetermined horizontal position, means for securing the side covers in position to cause a selected level of the indicator liquid to correspond to a horizontal position.

2. A liquid level indicator comprising a cylindrical body member having a circular groove circumferentially around the body member, the adjoining peripheral surfaces being in substantiallyrthe same cylindrical plane, a transparent the body on both sides of the groove to isolate the groove, a body of liquid in the groove, an end cap covering each end of the body and its cover and embodying an inwardly extending cylindrical portion engaging the transparent cylinder, each extending portion of the cap being marked into quadrants With readings of angular spacing from a predetermined zero or horizontal position.

' DOMINICK RODGERS. 

